Wedging device.



PATNTBD AUG.

WBDGING DEVICEv A. GTZLMP a; G. KOENI APIfLIOATION FILED MAY 13 lUNITED STATES PATENT cierro AADoLF GTZLAFF AND GEORG KOENIG, Vor REDEU, SAAB, GERMANY..

WEDGmG DEVICE.

Application led May 13,

- To all whom it may concern:

Be it known that we, ADoLF GTZLAFF, miner, and GEORG KOENIG, captain miner,

subjects of the 'Kingdom of Prussia, Ger-- many, residing at Redeu, Saar, Germany,

A further object of the invention is to provide a wedging device for the purpose set forth whereby spherical bodies of varying diameters may be employed so as to render it possible to wedge down the toughest rock with the smallest amount of force, and in this connection it will be stated that, generally, the work will be commenced with a set of spherical bodies of smaller diameter and this set be advanced to the end of the tube. If v such set does not produce the desired wedging effect it is removed from the tube and replaced by a set of spherical bodies of larger diameter.

Furtherobjects of the invention are to provide a wedging device which shall be simple in its construction, strong, durable, efficient in its use, readily operated and set up and comparatively inexpensive to manufacture.

li ith the foregoing and other objects in View the invention consists in the novel construction, combination and arrangement of parts hereinaftermore specifically described and illustrated in the accom anying drawings, wherein is shown the prefJerred embodiment of the invention, but it is to be understood that changes, variations and modifications. can be resorted to which come within the scope of the claims hereunto appended.

In the accom anying drawings, wherein like characters (enote corresponding parts throughout the several views, Figure 1 is a longitudinal sectional view of a wedging device in accordance with this invention .F ig. 2 is an elevation of the forward part thereof; Fig. 3 is a section along line A-A of Fig. l F ig. 4 is a detail illustrating the spider for coupling the worm shaft to the tube; Fig. 5 illustrates a modification in sectional eleva tion; Fig. 6 is a section on line A-B of Fig.

Specification of Letters Patent.

1997. Serial No. 373,487.

Fig. is a section along line Ef-F when the Patented Aug. 4, 1908.

5; Fig. 7 is a sectionen line C-D of 5;'

Fig. 8 1s a section on line. Fr-F of `ig. 5; Fig. 9 is a section on line Cf-D of Fig. `5, when the parts are in wedging position, and,

parts are in maximum wedging position.-

Referring to Figsgl to 4 of the drawings, a denotes an elongated ex )ansible tube having the bore thereof gradually tapering towards one end and the other end a thereof flared. The tube a is split into a plurality of longitudinally-extending sections (as shown four in number) and which are indicated by theA reference characters a2, 0.3, a, and as. The said sections are adapted to separate transverselynof their length during the :wedging operation and .by a means hereinafter referred to. One end of each of said sections is reduced, as at a and provided with an aperture a through which extends an arm l'- of a collar c, the arms l and collar c constituting a. spider and by such an arrangement allows of one end of each of the shift able sections of theV tube a to be moved outwardly through a means to be hereinafter referred to. The movement of the contracted end of the sections of thetube (L is limited in an outward direction by'pins Z extending through openings l2 formed in the outer end of t ie arms l. Surrounding that end of the tube a which is not provided with the contracted port-ion, is an annular cap-piece e' having an openino' e2 with which communicates a funnel the latter being arranged in proximity to t ie closed end e3 of the capfpiece e. The cap-piece e is furthermore rovided with a series of openinefs 'i througi which extend headed screws The inner or threaded art of each of the screws l iixedly engages in the sections of the tube a-thatis to say, a headed screw L engages with each of the sections of the tube a. The diameter of the openings 'i through' which the screws h extend is such as to allow the screws to readily pass through said openings when the sections of the tube are shifted awa)v or towards the axis thereof. The diameter of the cap-piece e is such with respect to the diameter of the tube a as to allow of the n'ioveinent of the tube sections when these latter are shifted in either direction.

lArranged within the cap-piece e and extending into the tube a rnd of a length as to terminate in close proximity to the contracted )ortion a, of the tube a., is a worm shaft b liaving a triple. thread with a lefthand'A twist. One end of the worm shaft b is y It will be assumed that it has been inserted' contracted, as at b' and carries the collar c, one face of the lcollar abutting against the terminus of the threads of the worni shaft at one end. The collar c is maintained in'position upon the contracted portion l2 of the worin shaft through the medium of the nut d', which engages with a series of threads b2 formed upon the contracted portion b of the By the foregoing arrangement the collar c is not only secured upon the worin shaft b but also such arrangement constitutes a bearing for the contracted end of said worm shaft. The shank of the worm shaft b extends through the end e3 of the cap-piece a and has its outer terminus squared as at m whereby said shank can be connected to an operating `means for rotating the shank.

The reference character g denotes a plurality of spherical wedgin'Jr bodies which are fed through t-he channe s formed by the threads of the worin shaft. The `threaded portion of the worm shaft extends below the o ening a2 which constitutes an outlet for t. e funnel or hopper j'.

Referring to Figs. 5 to l0 of the drawin s, the construction of the device shown there V is similar to that shown in Figs. 1 to 4, wit t-lie exception' that the inner face of the tube alias a portion of its length provided with the grooves fn. Said grooves 'n'. terminate at a point removed from that end of the tube to w iich is connected the cap-piece e'. The grooves n extend in an opposite direction with respect to the threads ot the worm shaft l and the function thereof is to receive the wedffing bodies so as to discontinue the expanding of t-he sections when occasion so requires.

The tube asliown in Fig. 1, as well as that shown in Fig. 5, is formed with peripheral ribs e substantially V-shaped in cross section. These ribs eare arranged at intervals throughout the periphery of the tube aand are ada ted to prevent the tube from slipping bac when forced into a drill or bore opening.

The construction shown in Figs. 1 to 4 is to be used when the portions of the coal or stone are laid bare oninore than two surfaces, while the construction shown in Figs. 5 to 10, however, is only used when the portions of the coal or stone are laid bare on two surfaces.

The operation of the device is as follows:

ling bodies gis introduced into t inV an opening so that the hopp'er'will stand upright; Thereupon a set of sphericalwedg- 1e hopper and drop ed into the channels of the worm shaft. The atter is then turned Ato the right. As the worm shaft has a triple thread, each of the channels between the threads will take u a body g which will move down theshaft. 'lnespherical bodies will be pressed at an angle of ft-o each other afrainst the wall of the tube at a vdistance equal to the depth of the thread. While advancing the spherical bodies will vturn round their axes and when the first set of bodies .has reached the end lof the tube without having a suilicieiit effect, said set of bodies can be returned by turning/ the shaftv to the left. They can then be re moved andanew set of bodies replaced of greater diameter so that the necessary wedging action will be imparted to the sections of the tube.

In the construction shown in Figs. 5 to 10 the spherical bodies will, after havino` passed the first third of thetotal length of the tube,

enter the grooves n., commencing at such point and conse uently exert no pressure on the sections of tie tube as will be evident.

What We claiin isf 1. A wedging device for the purpose set forth comprising an expansible tube having a tapering bore and formed of sections adapted to separate transversely of their length, spherical wedging bodies ada ted to travel within the tube and engage tie sections to expand the tube, and a screw shaft arranged within vthe tube for causing the travel of said bodies.

2. A wedging device for the urpose set forth comprising an expansible tribe having a tapering bore and formed ofsections adapted to separate transversely of their length, spherical wedgiiig bodies adapted to travel within the tube and to engage said sections thereby expanding the tube, means arranged within the tube for causing the travel of said bodies, and means for limiting the movement in one direction of the sections of the tube.

3. A wedging device comprising an expansible tube having a tapering bore and formed of sections adapted to separate transversely of their length, means for connecting said sections together and for allowing of the shifting of said sections, spherical bodies traveling through the tube and engaging the sectie is thereby expanding the tube, and means for causing the travel of said bodies.

4. A wedging device for the purpose set forth comprising an expansible tube having a tapering bore and formed of sections adapted within the tube for causing the travel of said bodies, said tube having a portion of the length of the inner face thereof provided with grooves adapted to receive said wedging bodies, thereby causing the discontinuing of the expanding of the tube.

5. A wedging device for the purpose set fort-h comprising an expansible tube having a tapering bore and formed of sections adapted to separate transversely y of their iength, spherical wedging bodies adapted to travel within the tube and to engage the sections thereby expanding the tube, means arranged within the tube for causing the travel of said bodies, said tube having a portion of the lengthot' the inner face thereof provided with grooves adapted to receive 'said wedg'ing bodies, thereby causing the discontinuing of the expanding of the tube, and means forlimiting the movement in onel direction of said sections.

6. A wedging device comprising an expansiblc tube having a taperingbore and formed of a plurality of sections adapted to separate transversely of their length, means for connecting said sections together and for alloW- ing of the shifting of said sections, traveling spherical bodies moving within the tube and adapted to eno'age said sections thereby expanding the tu e, said tube having a portion of the length of its inner face provided With grooves adapted to receive said bodies thereb vcausinga discontinuing of the expanding of the tube.

7. A Wc'dging device comprising an expansible tube having a tapering bore and formed of a plurality of sections adapted to sepa- -ratr` transversely of their length, means for connecting said sections together and for allowing of theshifting of said sections, traveling spherical bodies moving within the tube and adapted to engage said sections thereby expanding the tube, said tube having a portion of the length of its inner face provided with grooves adapted to receive said bodies ther/:hy causing a discontinuing of the expanding of the tube, and means arranged in the tube for causing the travel of said bodies.

8. A wedging device comprising an expansible tube having a tapering bore and formed of a plurality of sections adapted to separate transversely of their length, means for connecting said sections together and for allowing of the shifting of said sections, traveling spherical bodies moving wit-hin the tube and adapted to engage said sections thereby expanding the tube, said tube having a portion of the length of its inner face provided with grooves adapted to receive said bodies thereby causing a discontinuing of the expanding of the. tube, means arranged in the tube for causing the travel of said bodies, and means for limiting the movement in one direction of the sections. y

i 9. A wedging device for the purpose set forth com )rising an expansibleA tu be having a tapering bore and formed of a plurality of sections adapted to separate transversely of their length, means for connecting said sections together and for allowing of the shifting of said sections, spherical bodies traveling through the tube and engagingfvvith the sections for expanding the tube, and a Worm shaft for causing the travel of said bodies,

said tube having a portion of its inner face formed with grooves adapted to receive said bodies thereby causing a discontinuing ef the expanding of the tube.

10. A wedging device comprisingl an expansible tube having a tapering bore and formed of a plurality of sections adapted to separate transversely of their length, a rotatable worm shaft arranged within said tube, and spherical bodies carried by said shaft and adapted to engage the inner face of the sections for expanding the tube.

11. A Wedgmg device comprising an eX- pansible tube having a` tapering bore and formed of a plurality of sections adapted to se arate transversely of their length, a rotatalile worm shaft arranged Within said tube, spherical bodies carried by said shaft and adapted to engage the inner face of the sections for expanding the tube, and means for limiting the outward movement of the sections and forconnectingthe sections together.

12. A Wedgng device comprising an expansible tube having al tapering bore and formed of a plurality of sections adapted to separate transversely of their length, a rotatable worm shaft arranged within said tube, and spherical bodies carried by said shaft and adapted to engage the inner face vof the sections for expanding the tube, said tube having its inner face provided with grooves, said grooves terminating at a point removed from the entrance end of said tube, said grooves adapt-ed to receive said bodies, therey causing a discontinuing of the expanding of the tube.

13. A wedging device comprising an expansible tube having a tapering bore and formed of a plurality of sections adapted to separate transversely of their length, a rotatable worm shaft arranged within said tube, spherical bodies carried by said shaft and adaptedvto engage the inner face of the sections for expanding the tube, said tube having its inner face provided With grooves, said grooves terminating at a point removed from the entrance end of said tube, said grooves adapted to receive said bodies, thereby causing a discontinuing of the expanding of the tube, and means for limiting the ont- Ward movement of the sections and for con- Inecting the sections together.

14. A Wedging device comprising an expansible tube having a tapering bore and 4:. M i 1 l 895,260

Witnesses:

presence Two subscribing Dorf GTZLAFF. enen@ KOENIG.

LUDWIG REcHHmn-gpf' Jos. EDUARD .......Lgm 

